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7. For the preceding problem you should find that there are significant differences among the three treatments. The primary reason for the significance is that the mean for treatment III is substantially larger than the means for the other two treatments. To create the following data, we started with the values from problem 6 and subtracted 3 points to each score in treatment III. Notice that subtracting a constant causes the mean to change but has no influence on the variability of the sample. În the resulting data, the mean differences are much smaller than those in problem 6. Treatment III 3 3 N = 12 7 G = 48 3 1 7 EX = 236 1 5 3 M = 3 M = 4 M = 5 T = 20 SS = 16 T = 16 T = 12 SS = 8 SS = 12 II %3D

7. For the preceding problem you should find that there are significant differences among the three treatments. The primary reason for the significance is that the mean for treatment III is substantially larger than the means for the other two treatments. To create the following data, we started with the values from problem 6 and subtracted 3 points to each score in treatment III. Notice that subtracting a constant causes the mean to change but has no influence on the variability of the sample. În the resulting data, the mean differences are much smaller than those in problem 6. Treatment III 3 3 N = 12 7 G = 48 3 1 7 EX = 236 1 5 3 M = 3 M = 4 M = 5 T = 20 SS = 16 T = 16 T = 12 SS = 8 SS = 12 II %3D

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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7. For the preceding problem you should find that there are significant differences among the three treatments. The primary reason for the significance is that the mean for treatment III is substantially larger than the means for the other two treatments. To create the following data, we started with the values from problem 6 and subtracted 3 points to each score in treatment III. Notice that subtracting a constant causes the mean to change but has no influence on the variability of the sample. In the resulting data, the mean differences are much smaller than those in problem 6. Treatment II 3 3 N = 12 5 7 G = 48 3 1 7 EX = 236 %3D 1 3 M = 3 M = 4 М — 5 T = 12 T = 16 T = 20 SS = 8 SS = 12 SS = 16 %3D y
Transcribed Image Text:7. For the preceding problem you should find that there are significant differences among the three treatments. The primary reason for the significance is that the mean for treatment III is substantially larger than the means for the other two treatments. To create the following data, we started with the values from problem 6 and subtracted 3 points to each score in treatment III. Notice that subtracting a constant causes the mean to change but has no influence on the variability of the sample. In the resulting data, the mean differences are much smaller than those in problem 6. Treatment II 3 3 N = 12 5 7 G = 48 3 1 7 EX = 236 %3D 1 3 M = 3 M = 4 М — 5 T = 12 T = 16 T = 20 SS = 8 SS = 12 SS = 16 %3D y
b. Use an ANOVA with a = .05 to determine whether there are any significant differences among the three treatment means. (Does your answer agree with your prediction in part a?)
Transcribed Image Text:b. Use an ANOVA with a = .05 to determine whether there are any significant differences among the three treatment means. (Does your answer agree with your prediction in part a?)
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